A question about using conocer
Can I say:
La chica no conoce su mamá.
or would I have to say:
La chica no conoce a su mamá.
I'm never sure when I need to put "personal a" in front of a person! Sometimes it's used, and sometimes it's not.
You should put "a" before a person any time that it is the direct object of a verb, or in other words, when the verb is done to a person.
I invite your mom. ...I invite who? Your mom! -direct object
I called Juan. ....I called who? Juan! -direct object
I woke up Ana. ....I woke up who? Ana! -direct object
Invito a tu mamá,
Llamé a Juan.
Desperté a Ana.
In your case, "su mamá" is the direct object of "conocer" so you would definitely need "a".
I think you would include the a.