I have had a look for marriages in Liskeard for Phillippa, but cannot find one.
Phillippa Lizzie Toms marry in 1908, Liskeard District, Vol5c, page 133, 2/4qtr. On the same page is Thomas John W Mitchell and Alfred Roose. either could be here husband. the only way to find out is to get the marriage certificate. I would think that this Philippa is you lady. You need to work backwards with the definite knowledge that you have, such as obtaining BMD certificates, from yourself, parents, grandparents,etc.
I have a Alfred Roose born 1887 in my tree. I don't know if he got married, but he died in Australia in 1923, and probate was granted to his sister in England.
If you have searched the OPC site you would have found
Phillippa Lizzie Toms baptised 25 Jun 1888 at Looe, dau of William Thomas (fisherman)and Susanna Phillippa. According finmypast her birth was registered 2/4qtr 1888 Liskeard district, Vol5c, Page59.
William Thomas & Susanna Phillippa COLLINGS were married at St Martin's by Looe on 20 Jan 1881. WT father was James and SP was William COLLINGS. Witnesses Charles Toms and Mary Marshall.
Their children were
Carries baptised 23 June 1881 at St Martin's by Looe
Wiliiam Thomas baptised 26 Feb 1883 at the Looe Weslyan Chapel.
Phillippa ROOSE married Edward J GEORGE 1925, Fylde District, Lancashire, 1/4qtr, Vol8e, Page 983. Could she have married under her married name, not maiden name. you need to get the certificate again.
Hope this is of some help to you.