Rather_Dashing, yes. For the possessive pronoun "ihrer" to mean "your", it should be capitalized whether referring to the singular 'formal you' or the plural 'formal you'. There seems to be a bug with this question. The translation at the head of the discussion is correct, but that translation is not one of the answers given.
The silent r at the end of words like ihrer is a feature of most German accents, so unfortunately there is always a chance of ambiguity there.
Also, you have to know that you always use the dative case after the preposition "mit," and because the noun is feminine, the article has to be "ihrer" not "ihre."
one sentence earlier used "ihrem Pferd" referring to her horse ...why is this "ihrer Katze"?
Refers to the gender of the object, not the subject. Because horse is neuter - das Pferd - and cat is feminine - die Katze.
Horses are neutered all the time. A mare (die Stute) or a gelding (der Wallach) is much more manageable than a stallion (der Hengst).
Funny, though: Wallach is a masculine noun denoting a neutered animal.
Could someone please summarize what the above sentence could mean, regardless of the capitalization? Her cat + their cat + your (pl) cat?
I think we need a native German speaker to step in here. Am I right that this sentence as written can only mean either, "I play with her cat" or "I play with their cat." Not "your" cat.
You are right. The ihrer should be capitalized to mean "your"
In real life it never this confusing, thanks to context.
Why is the inflection strong and not mixed? I was expecting mixed since ihr is a possessive determiner.
Mixed inflection is used for example for adjectives after possessive determiner and indefinite articles.
- mit meiner neuen Katze
Strong inflection is used when there is no article, like here.
Oh I see. So in your case, meiner is the determiner and has a strong inflection and neuen has a mixed inflection because there is no need for a strong one since meiner already has that covered. Thanks for the example!