Help shes to tall

I have a plant female of unknown strain im guessing Indica/Sativa more sativa. Problem is im in a tent and height is running out i guess i started flower to late let her get to tall she is 50 inches now and about 30 days from start of 12/12 and about 21 days into flower about 40 days to go i have only about 15-18 more inches of light raise and it will be against the ceiling of the tent she is growing like crazy and i have the light about 4 inches off her(400 HPS/Cooltube) without burn. So i dont know what to do Maybe Bushmaster ? or cut the top 6 inches and make a big clone ? if i top at this point in flowering will she recover and produce a decent main cola ? Any help or advice would be appreciated.

if its already in flowering u shouldnt top the top even thought shem will lose alot of bud production it will recover

try to tie it down some or even super crop the top

ye i guess... get a string and a brick..tie it from end to end...