Hi Jack ......
Yes she is female and there is a S or squiggle in front of the t which is small not capitol......... spelt as it sounded to enumerator as opposed to correct spelling........... it just says mariners and the whole family are bracketed together. It is from the original image.
Amelia 1861 ...
RG9/674 F 161 P 44.
Amelia Shinkfield hd m 33 mariners wife Beaulieu Hants
Caroline dau 8 scholar Southampton
Eliza dau 6 d/o d/o
Emily dau 4 d/o d/o
John Robert son 4 months
Living Princes St Southampton St Mary.
Tazzie