Let's learn Quenya on the Downs

[Huinesoron]

Not quite; you've got a big chunk in the middle exactly right, but went a bit wrong at the ends.

-s: the third person pronoun; it can be he, she, or it.

lá: you want a different meaning here. This word doesn't quite fit the quote, but it was the best I could find.

mat: decent guess with "eats", but as a basic verb mat- would always take an ending of some sort, even in the aorist tense. (A-stem verbs don't, but if it ends in a consonant, it needs something.) That indicates that this mat isn't a verb; it could be a dual noun (ma+t = "a pair of things"), but in this case it's just a noun.

nésë: nésa would be sister, but I said nésë. This is an attested form, but I could equally have used nés, or apparently nánes(ë).

horina: I think you might have correctly identified this as a passive participle, but gotten the wrong verb; this is hora-, not horya-

hS