Hi Roof, I’ll have a go at answering these…
11a anagram of thing + a word for female beast
15 a three letter acronym for ‘too far’ then a three letter Scots word for out (away)
18 the first four letters are a US pop diva, so the word, whimsically, might be like this person?
28 four letter Queen, then one letter for wrong and one letter for first of E rror
16,4 is an anagram of (myth has) + leader in E rror around two letters for party and gate directly from the clue, then the last two words a synonym for domestic function.
Writing this I see “leader in error” is used twice, hmm.