Avia rosas matri commendat et dicit odorem earum animo aegro auxilio esse.

Because matri is the person to whom the roses are being entrusted or recommended.

With commendare, Latin commonly uses:

• the thing in the accusative: rosas
• the person receiving it in the dative: matri

So:

• rosas matri commendat = she entrusts/recommends the roses to the mother

Commendat comes from commendare, which can mean several related things, such as:

• to entrust
• to recommend
• to commend
• to give into someone's care

In this sentence, it most naturally suggests something like entrusts or recommends the roses to the mother, probably because they are supposed to be useful or beneficial.

So the verb is a little broader than any one single English word.

Because it is the subject of an indirect statement after dicit.

Latin often reports what someone says, thinks, hears, or knows by using:

• an accusative subject
• plus an infinitive verb

So here:

• dicit
• odorem = accusative subject
• esse = infinitive

That means:

• dicit odorem earum ... esse = she says that their scent is ...

If this were a direct statement instead, it would be:

• odor earum animo aegro auxilio est

So odor becomes odorem because it is inside indirect speech.

For the same reason: this is an indirect statement after dicit.

In English, we often say:

• She says that their scent is helpful

Latin usually does this with the accusative + infinitive construction instead of using a separate word for that.

So:

• direct statement: odor earum animo aegro auxilio est
• reported after dicit: odorem earum animo aegro auxilio esse

The finite verb est changes to the infinitive esse.

Earum means of them or their.

It refers back to rosas. So:

• odorem earum = their scent
• more fully: the scent of the roses

Grammatically, earum is:

• genitive plural feminine

It is the genitive because it shows possession or relation: the scent of them.

Because rosas is feminine plural.

Latin pronouns and adjectives must agree with the noun they refer to in:

• gender
• number

Since rosas is feminine plural, the matching form is:

• earum = feminine plural genitive

If the antecedent were masculine or neuter plural, then eorum could be used instead.

Animo aegro is dative singular:

• animo = dative singular of animus
• aegro = dative singular of aeger, agreeing with animo

It tells us for whom the scent is helpful:

• animo aegro = for a sick mind/spirit/heart

This is often called a dative of reference or dative of advantage/disadvantage, depending on how narrowly you classify it.

In this sentence, it works especially closely with auxilio, forming a very common Latin pattern.

This is a standard Latin idiom.

• auxilio is dative singular of auxilium
• esse means to be

Together, auxilio esse means:

• to be a help
• to serve as help
• to be helpful

So auxilio is not an ablative here. It is a dative of purpose.

This kind of expression is very common in Latin:

• praesidio esse = to be a protection
• curae esse = to be a care/concern
• usui esse = to be useful

So odorem earum animo aegro auxilio esse means that the roses' scent serves as a help to the troubled or sick spirit.

Yes.

The phrase animo aegro auxilio esse is a classic double dative construction.

It contains two datives:

1. auxilio — the dative of purpose

   • as a help

2. animo aegro — the dative of reference/advantage

   • for a sick spirit/mind

So literally, the structure is something like:

• their scent to a sick spirit is for-help

More natural English would be:

• their scent is a help to a troubled mind
• their scent helps a sick spirit

This construction is extremely common in Latin and worth learning as a set pattern.

Because Latin is talking about the scent as a single collective thing.

Even though there are several roses, they can produce one combined fragrance. So singular odor is perfectly natural:

• many roses
• one scent

English often does the same thing:

• the roses' scent
• not necessarily the roses' scents

It can definitely mean something broader.

Animus is one of those Latin words with a range of meanings, including:

• mind
• spirit
• heart
• feeling
• courage
• disposition

So animo aegro could suggest:

• a sick mind
• a troubled spirit
• a heavy heart

The exact English wording depends on context, but the important point is that animus is often more emotional or inward than a purely intellectual mind.

Yes.

Avia is the subject of the first verb, and it remains the understood subject of the second verb as well:

• Avia rosas matri commendat
• et dicit ...

Latin often leaves the subject unstated when it stays the same. So there is no need to repeat avia before dicit.

The endings are more important than the order.

Latin word order is flexible because case endings show the grammatical roles:

• avia = subject
• rosas = direct object
• matri = indirect object
• odorem = accusative subject of infinitive
• earum = genitive
• animo aegro = dative
• auxilio = dative
• esse = infinitive

That said, word order still helps with emphasis and flow. Here the sentence places:

• odorem earum early, as the main thing being said
• auxilio esse at the end, where the key idea lands neatly

So the order is stylistic, not random, but the grammar comes from the forms.