let it go ,, she will be ok ,, i had same problem ,, i have 70 W hps also ,,, was 4 inches away ,, but at night time it was gettin cold & the leafs were perking up ( during dark time ) sooo when the lights came on ,, they were right on teh bulb

,,, .. how cold does it get in ur room during lights off ..??? ,, well i moved mine about 7 inches away & shes ok now ,,,, even 4 inches wasnt bad ,, i put my hand there & it was not even hott ,, .. o well shes 7 inches away from hps now ,,, i didnt burn mine tho ,, just heat stress from bein to close & then too cold at night,, also i wouldnt cut off the burned part ,,, no way ,, just let her go