mˈæθaɪz bɪkˌeɪm ɐ fʌndɹˈeɪzɪŋ koʊˈɔːɹdᵻnˌeɪɾɚ fɚðə "kˈɜːsti ɐpˈiːl" ˌɔn bᵻhˈæf ʌvðə fɹˈænsɪs hˈaʊs tʃˈɪldɹənz hˈɑːspɪs ɪn dˈɪdsbɛɹi, mˈæntʃɛstɚ, ænd wʌz ɪnvˈɑːlvd wɪð vˈɛɹiəs ˈʌðɚ kˈænsɚ tʃˈæɹᵻɾiz.
Mathis became a fundraising coordinator for the "Kirsty Appeal" on behalf of the Francis House Children's Hospice in Didsbury, Manchester, and was involved with various other cancer charities.